Question

Is there any way that you can delete groups programatically? You can create them with ABGroupCreate() so logically there should be a delete function also? Or is that considered too hazardous (in a way that evil programmers can delete the user’s groups?)

Answer 1

Remove group members with ABGroupRemoveMember.

EDIT: Another idea: an ABGroup is an ABRecord, and you can remove an ABRecord with ABAddressBookRemoveRecord.

ANOTHER EDIT: And in fact see Apple’s ABUIGroups example, which contains this code:

- (void)deleteGroup:(ABRecordRef)group fromAddressBook:(ABAddressBookRef)myAddressBook
{
    CFErrorRef error = NULL;
    ABAddressBookRemoveRecord(myAddressBook, group, &error);
    ABAddressBookSave(myAddressBook,&error);
}

So there you go.